3477 results about "USB" patented technology

A universal mobile game controller is provided that can interoperate with multiple computing device operating systems (e.g., Android and iOS) in an automatic way through a common connector (e.g., USB-C). With these embodiments, instead of building a separate mobile game controller for each operating system, a single mobile game controller can be used for all operating systems. These embodiments can also enable communication with an application running within the computing device operating system. Other embodiments are provided.

The invention relates to the technical field of computer hardware and network communication, in particular to a high-speed I / O (input / output) virtualization server based on an FPGA (field programmable gate array) and a remote forwarding method.The high-speed I / O virtualization server comprises an FPGA chip, a network processing unit, an I / O protocol processing unit, a protocol conversion and scheduling unit, a time sequence and transaction management unit and a data buffering and flow control unit are integrated in the FPGA chip; the optical fiber Ethernet interface module comprises a physical layer interface and an MAC layer processing and network configuration interface; the local I / O interface module comprises a USB interface circuit, a serial port interface circuit, a PCIe interface circuit and an interface expansion connector; the power supply and monitoring module comprises a multi-path power supply management system, a state monitoring and diagnosis system and an LED indication system; according to the self-adaptive Baud rate detection circuit, the Baud rate can be accurately locked under the condition that data with less than two characters is received, the number of data bits, the type of a check bit and the length of a stop bit are automatically identified, and compared with a traditional microcontroller scheme, the self-adaptive Baud rate detection circuit has higher precision and higher detection speed.

The invention relates to the technical field of communication, in particular to a USB-A interface and serial port dynamic switching and protection system based on an analog switch. Comprising a main control unit, the main control unit is used for planning dynamic switching and conflict coordination of a USB-A interface and a serial port as a whole, generating a conflict-free channel switching control instruction by integrating a dynamic priority scheduling algorithm and combining a USB data transmission real-time load, a serial port communication request emergency degree and a device historical interaction record fed back by a state detection unit, and sending the conflict-free channel switching control instruction to the state detection unit; the analog switch unit is driven to complete channel gating; an analog switch unit; a grading protection unit; a protocol adaptation unit; and a state detection unit. Priority scheduling is carried out by means of the main control unit in combination with multi-dimensional parameters such as the transmission load of the USB-A interface and the communication emergency degree of the serial port UART, communication channels of the USB-A interface and the serial port can be flexibly switched, the flexibility and adaptability of interface switching are enhanced, and the problem of switching limitation caused by a single triggering condition is solved.

The invention relates to the technical field of automatic driving vehicle control, in particular to a drive-by-wire chassis whole vehicle test device and method, which considers the delay compensation of a vehicle steering actuator and comprises an upper computer, a real-time controller, a drive-by-wire chassis vehicle, a combined navigation system and a USB-CAN (Universal Serial Bus-Controller Area Network) acquisition module. The method comprises the following steps that a vehicle in-loop system is built on a rack, and the delay characteristic of a steering actuator is identified through step and sine mixed excitation signals; establishing a vehicle trajectory tracking error model containing delay compensation based on an identification result; deploying a delay compensation model in a real vehicle environment, and verifying trajectory tracking performance; comparing the transverse error and the course angle error before and after compensation, and evaluating the compensation effect. The invention provides a drive-by-wire chassis whole vehicle test device and method integrating delay identification, model injection and real vehicle verification, and an engineering scheme is provided for dynamic rapid calibration and algorithm migration of an automatic driving drive-by-wire chassis actuator.

A universal mobile game controller is provided that can interoperate with multiple computing device operating systems (e.g., Android and iOS) in an automatic way through a common connector (e.g., USB-C). With these embodiments, instead of building a separate mobile game controller for each operating system, a single mobile game controller can be used for all operating systems. These embodiments can also enable communication with an application running within the computing device operating system. Other embodiments are provided.

The invention relates to the technical field of keyboard pairing, and discloses a keyboard multimode pairing method and device, equipment and a storage medium. The method comprises the following steps: establishing a switching time calculation model of a keyboard according to the reference switching time of keyboard hardware, a protocol node cooperation coefficient, an equipment response weight coefficient and a pre-connection optimization coefficient; calculating the theoretical optimal switching time of the current switching scene; selecting a working mode of single-node direct switching, double-node pre-connection or three-node parallel pre-connection of a keyboard Bluetooth node, a 2.4 GHz node and a USB node; activating a corresponding communication node, sending a connection handshake signal to the target equipment and establishing a communication link pre-connection state; and switching keyboard input and output from the current equipment to the target equipment to finish quick connection switching between the equipment. According to the invention, a pre-connection mechanism is adopted, the target equipment connection is established in advance before the user completes the switching instruction, passive response switching is converted into active prediction switching, and instantaneous equipment switching is realized.

The invention relates to the technical field of electric digital data processing, in particular to a data transmission system and method based on a USB interface. The system comprises a main control device, an intermediate device and N external devices, wherein the main control equipment is connected with the intermediate equipment through a USB (Universal Serial Bus) interface, and the intermediate equipment is respectively connected with N external equipment. According to the embodiment of the invention, data transmission can be carried out on the external equipment based on the data security type of the external equipment, whether retransmission is carried out or not is detected in the data transmission process, and different requirements of different external equipment on data security are met, so that the data reliability is ensured, and the reliability and the intelligent level of the data transmission process are improved.

A forward and reverse plugging USB socket and an electronic device, the forward and reverse plugging USB socket comprises a first terminal group, a second terminal group arranged below the first terminal group, a metal middle plate arranged between the first terminal group and the second terminal group, and an insulating body for fixedly holding the first terminal group, the second terminal group and the metal middle plate into a whole, the insulating body comprises a wrapping part, a butt joint tongue part formed by extending forwards from the wrapping part, and a tail part located behind the wrapping part. The metal middle plate comprises a plate body extending between the first terminal set and the second terminal set in the longitudinal direction, a buckling part formed by protruding from the transverse outer side of the front end of the plate body, and a reinforcing arm connected to the rear end of the plate body and formed by extending in the transverse direction, and the reinforcing arm is embedded in the tail part. According to the forward and reverse plugging USB socket, the manufacturing process can be effectively simplified, and the cost is reduced.

The invention provides a universal serial bus (USB) 2.0 host speed reduction bridge based on bidirectional protocol handshake and a prototype verification or hardware simulation acceleration platform, which are characterized in that a slow-speed side module runs at a slow clock frequency, is responsible for realizing a protocol layer of a USB protocol and a physical link layer function of the USB protocol, and communicates with a USB2.0 host controller in a chip design (DUT) to be tested; the original speed side module works under the original clock frequency, logic of a protocol layer of a USB protocol and a physical link layer of the USB protocol is achieved, communication with an external real USB2.0 slave end device is achieved through a USB2.0 PHY, data caching and synchronization are achieved through a data caching RAM, and the bridge control module overall plans the whole situation and accurately regulates and controls independent handshake of the USB2.0 protocol layers on the two sides under the original clock frequency. Through bidirectional protocol handshake on the two sides of the speed reduction bridge, data communication between a low-speed to-be-tested chip design (DUT) in a chip prototype verification platform and external standard-speed real USB slave equipment is achieved through the speed reduction bridge.

The invention discloses a USB low-power-consumption awakening system and method, a chip, a chip module and a terminal. The system comprises a USB physical layer interface for receiving a differential signal DP / DM of a USB bus, a wake-up signal generation circuit for generating a hardware wake-up signal in a USB low power consumption state, and a system interrupt controller for receiving the hardware wake-up signal and outputting system wake-up interrupt, the USB controller enters or exits from a low-power-consumption state under the control of the on-chip processing logic; and the on-chip processing logic responds to system wakeup interruption to recover a clock and a power supply for the USB controller. The USB controller turns off the master clock in a USB low power state, retaining only a small amount of holding power for saving register context. The USB controller bypassing a low-power-consumption state is directly connected to the interrupt pin of the chip, so that the system is firstly interrupted and awakened and then is electrified / clocked, and thus the power consumption of the Suspen is reduced to the minimum.

The invention discloses a mobile storage security access control system and method based on a microkernel architecture, and relates to the technical field of data storage security. The system comprises a host end and a mobile storage device end. And the host end is provided with a special device driver and is used for sending the generated authentication data and the storage access instruction to the mobile storage device end through the virtual storage front-end device created by the special device driver. And the mobile storage device end is deployed with an operating system based on a microkernel architecture, creates a virtual storage rear-end device corresponding to the virtual storage front-end device, and is used for performing host identity and capability verification on the authentication data received by the virtual storage rear-end device, and receiving and executing a storage access instruction from the host end after the verification is passed. Communication connection is established between the virtual storage front-end device and the virtual storage rear-end device through a USB bus. According to the system, active and fine-grained power control of access to the mobile storage equipment end is realized.

The utility model relates to the technical field of computer remote control equipment, and provides low-power-consumption PCIe (Peripheral Component Interconnect Express) card insertion type computer remote control equipment. The device is composed of a PCIe board card and a USB expansion board card, and the PCIe board card integrates a network module, a first power supply module and an HDMI module. The first power supply module covers a mainboard power supply interface unit, a case power supply interface unit, a PCIE interface unit and a Poe power supply unit, the network module comprises an Ethernet unit and a wireless local area network unit, and the USB expansion board card is equipped with a second power supply module. All the modules cooperate with one another, and various power supply and networking modes are achieved. In addition, the equipment is further provided with a baffle used for fixing the position of the equipment in the case. The PCIe board card adopts a half-height board card design, the baffle is a standard baffle or a half-height baffle, PCIe full-height and half-height installation modes are compatible, and the adaptability and flexibility of the equipment in different case environments are further improved.

The embodiment of the invention discloses a cross-device control method, electronic equipment and a storage medium. Through an existing data transmission channel in a screen transmission connection state, first peripheral operation data generated by interaction operation performed by a user on peripheral equipment matched with the screen transmission display equipment is sent to a screen transmission device, and the screen transmission device forwards the first peripheral operation data to screen transmission source end equipment. The screen transmission auxiliary application in the screen transmission source end equipment performs conversion according to the hardware parameters of the screen transmission display equipment and the screen transmission source end equipment to obtain second peripheral operation data adaptive to the hardware state of the screen transmission auxiliary application, and then sends the second peripheral operation data to the screen transmission device; and the screen transmission device carries out packaging according to the USB HID protocol according to the second peripheral operation data to obtain an HID message directly available for the screen transmission source end equipment, and sends the HID message to the screen transmission source end equipment for response, so that cross-equipment control on the screen transmission source end equipment when explanation is carried out by taking the screen transmission display equipment as the center is realized, continuity of multi-person communication is ensured, and the user experience is improved. And the information transmission effect is improved.

The invention discloses a collaborative authentication method of a safety U disk, which comprises the following steps of: when the safety U disk is inserted into a host for the first time, executing a set read-write sequence on a flash memory storage array of the safety U disk, and acquiring a PUF (Physical Unclonable Function) site of the safety U disk; reading a power-on initial state image of an SRAM (Static Random Access Memory) of an internal controller of the safe USB flash disk when the safe USB flash disk is powered on, and carrying out Hash abstract processing to generate a controller fingerprint abstract of the safe USB flash disk; when the security USB flash disk is authenticated, the host randomly generates a random number, maps the random number into a PUF bit address index and generates a PUF response of the security USB flash disk; combining the controller fingerprint abstract and the PUF response of the secure USB flash disk to obtain a session key; and realizing cooperative authentication of the secure USB flash disk according to the session key. The invention also discloses a system for realizing the collaborative authentication method of the safety USB flash disk. According to the invention, cooperative authentication of the safe USB flash disk is realized, and the reliability is higher and the safety is better.

The invention relates to the field of computer peripherals and display control. The screen direction switching and picture transmission system based on the USB channel comprises a host end processing module, a screen end display module, a USB control module, a host-display bidirectional feedback module and a direction sensing module, the host end processing module is connected with the screen end display module through a USB channel, the direction sensing module is used for sensing the real-time direction of the screen end display module, and the USB control module is used for direction parameter interaction between the host end processing module and the screen end display module; the host end processing module is used for collecting original picture data and obtaining preprocessed original picture data according to the original picture data; and the screen end display module is used for receiving the preprocessed original picture data transmitted by the USB control module. Through multi-sensor fusion and hardware acceleration, high-precision real-time sensing and low-delay direction switching of the screen posture are achieved, and the problem that manual adjustment delay is high in a traditional scheme is solved.

The invention discloses a multi-brand and multi-model automatic identification control method and system for an intelligent fixed-line telephone, and belongs to the technical field of plug and play of communication peripherals. The method comprises the following steps: after a USB plugging event is detected, extracting multi-dimensional features such as a manufacturer ID, a product ID, a USB serial number and a user-defined identifier of a fixed-line telephone in sequence to form a multi-dimensional feature vector with clear priority; then, through a multi-stage progressive matching strategy of first-stage (VI + PID accurate matching)-second-stage (self-defined identifier supplementary matching)-third-stage (serial number + descriptor fuzzy matching)-second-stage (self-defined identifier supplementary matching)-third-stage (serial number + descriptor fuzzy matching)-second-stage (self-defined identifier supplementary matching)-second-stage (self-defined identifier fuzzy matching)-second-stage (self-defined identifier fuzzy matching)-second-stage (self-defined identifier fuzzy matching)-second-stage And aiming at the scene of feature missing or VAD / PID conflict, a fault-tolerant mechanism is built in the system: when the scene is missing, the universal DLL is used for reverse query confirmation and identification, and when the scene is conflict, candidate DLLs are cyclically loaded according to a brand market share sequence until the communication verification succeeds. The method is high in accuracy, multi-stage progressive matching and confidence evaluation are combined, and the error recognition rate is lower than 0.1%; zero sample online: the new type number can be connected for the first time to complete the adaptation in the second level, and manual maintenance is not needed.

The invention discloses a video data transmission method and system based on an FPGA, and relates to data transmission. The method comprises the steps that a video data stream is acquired, and a time sequence signal of the video data stream is analyzed; writing the parallel data into an external memory to form a frame buffer area; packaging the read video data into a data packet meeting a USB3.2 transmission protocol; packaging the data packet based on a USB3.2 link layer protocol; and converting the USB3.2 protocol transmission frame into a differential signal, and transmitting video data in the USB3.2 protocol transmission frame according to the differential signal. In view of data loss caused by mismatching of a video input rate and a USB output rate in the prior art, by establishing an annular buffer structure and adopting a dynamic pointer management and waterline threshold monitoring mechanism, rate adaptive matching of a video data stream is realized, and continuous and stable transmission of video data is ensured.

The utility model discloses a controller with a starting frequency sweeping function, which is characterized in that a USB (universal serial bus) plug transmits electric power to the controller and an atomizer head end, and the controller consists of a current detector, a processor and a driving circuit; the processor sets a plurality of groups of oscillation frequencies to be provided for the driving circuit successively, and the current detector measures the current value consumed by each group of oscillation frequencies and feeds the current value back to the processor for recording; and scanning the record, locking the oscillation frequency corresponding to the maximum current value, and setting the oscillation frequency as the optimal oscillation frequency for atomization at the beginning of power supply of the USB plug when the atomizer is started.

The invention relates to the technical field of Internet of Things, in particular to a circuit for simultaneously converting UART (Universal Asynchronous Receiver / Transmitter) to multi-path different level communication, which comprises a double-USB input module, a power supply processing module, a USB-UART core conversion module and a multi-path level conversion module, the double-USB input module comprises an MINI-USB interface J6 and a USB-B interface J8, VBUS pins of the two interfaces are connected in parallel through a Schottky diode and then output to the power supply processing module, and data differential pair pins are connected in parallel and then connected to the USB-UART core conversion module; and the power supply processing module comprises an LDO (Low Dropout Regulator) voltage stabilizing chip and a filter capacitor, and is used for converting 5V voltage output by the double-USB input module into 3.3 V stable voltage. The circuit design that the UART is connected with various different levels for communication is adopted, the tool integration technology is achieved, the design that the two USB ports are connected in parallel is adopted, the compatibility of the USB data line can be effectively improved, the demands of customers are met, and the technical difficulty that one UART bus is connected with multiple USB ports is broken through.

A heated skate blade system is disclosed for optimizing ice skating performance through app-controlled temperature adjustment. The system includes a nichrome heating coil embedded in or adjacent to the blade, powered by a thin-film lithium-ion battery integrated into the blade holder. A microcontroller governs power delivery to the coil and wirelessly communicates with a mobile application via Bluetooth. The application enables users to input variables such as ice temperature, skater weight, skate size, blade hollow (ROH), and desired blade temperature. Based on these inputs, the system adjusts heating output to reduce the coefficient of kinetic friction between the blade and ice, enhancing glide and top speed. A USB-C port enables battery charging. The invention provides real-time, user-specific thermal tuning for hockey and speed skating applications, delivering improved speed and energy efficiency through compact, embedded electronics and an intuitive mobile interface.

The invention relates to the technical field of interface circuits, in particular to a multi-mode switching detection circuit for a Type-C interface, which is used for realizing peripheral type identification and automatic switching between a USB host mode and a DP input mode on a single Type-C interface. The circuit comprises an interface detection unit connected with a Type-C female seat interface, a voltage comparison unit, a main control processor chip, a mode discrimination unit and a control output unit. The voltage comparison unit carries out resistance voltage division and threshold comparison on CC pin voltage, two levels are formed at a detection node and sent to the main control processor chip, and USB equipment and DP source equipment are distinguished by the mode judgment unit. The control output unit controls the USB host power supply control circuit and the DP input chip power supply circuit, establishes a USB data channel in a USB host mode, and establishes a DP-to-video channel in a DP input mode. The circuit realizes rapid peripheral identification and mode automatic switching based on hardware, and is simple in structure, low in cost, high in response speed and high in system stability.

A USB anti-plugging device relates to the technical field of information security protection, and comprises a sealing shell and a password mechanism, the sealing shell is provided with a pluggable USB device, the sealing shell is internally provided with a locking assembly, the locking assembly comprises a fixed disc, the bottom of the fixed disc is rotatably connected with a driving disc, chucks are slidably arranged between the fixed disc and the driving disc at equal intervals, and the chucks are connected with the password mechanism. A hidden assembly is arranged in the sealing shell and comprises an arc groove drum, a straight groove drum is rotationally arranged on the inner side of the arc groove drum, a USB connector is arranged between the arc groove drum and the straight groove drum in a sliding mode, the USB connector is connected with USB equipment in an inserted mode, and violent pulling and inserting or unauthorized physical operation can be prevented through cooperative use of the password mechanism and the locking assembly. According to the USB connector, a user needs to input a correct password to enable the locking assembly to unlock the USB equipment, the safety is high, and when the USB equipment is not in a locked state, the hiding assembly can completely hide the USB connector in the sealing shell, so that physical contact or data stealing is prevented.

The invention relates to an adapter module (6, 6') for a modular industrial connector, wherein the adapter module (6, 6') is designed to accommodate a commercially available USB-C connector (11).

The invention discloses a direct current motor control and automatic detection system and method, the system comprises an upper computer, a lower computer and a CAN bus communication unit, the upper computer comprises a calibration module, a position control module, a self-inspection module and a communication interface, and the calibration module is used for initiating an automatic calibration instruction and receiving and displaying a calibration result; the position control module is used for generating a target position instruction and receiving and dynamically displaying the real-time position of the motor; the self-checking module is used for initiating a one-key self-checking instruction and displaying a self-checking result; the lower computer comprises a main control chip, the main control chip is provided with an H-bridge driving circuit and an encoder acquisition circuit, the H-bridge driving circuit is used for driving the direct current motor to rotate forwards and backwards, and the encoder acquisition circuit is used for acquiring motor position signals; the CAN bus communication unit is connected with the communication interface of the upper computer and the main control chip of the lower computer through the USB to CAN module; according to the invention, faults can be automatically detected in the production and use processes of the DC motor, and the efficiency of production personnel and the product quality are improved.

The invention discloses a multi-interface fingerprint identification card type USB flash disk, which belongs to the technical field of USB flash disks, and comprises a hardware core module, a software interaction module and a software-hardware combination module, the hardware core module is a physical basis of the USB flash disk, and is responsible for interface adaptation, fingerprint acquisition, data storage and state indication; the hardware core module comprises a multi-interface protocol module, a dual-master control cooperation module, a multi-specification plug-in card adaptation module and a fingerprint identification module; and the software interaction module is used for realizing fingerprint management, authority configuration and log recording functions through a four-layer architecture. In the use process, the plug-in type USB flash disk with the multi-interface fingerprint identification function is compatible with Lightning, TYPE-C and USB-A interfaces, adapts to multiple devices such as a computer, a mobile phone, a tablet computer and an industrial controller, does not need an additional adapter, is plug-and-play, improves the convenience of a use scene, is matched with a high-speed protocol of USB3.2 and above, gives consideration to the transmission efficiency and the device compatibility, has multiple permissions, and is convenient to use. And efficient protection of the information is realized through three-level permission classification.

The invention relates to the technical field of electronic testing, and discloses a USB module multi-station synchronous testing and data association method and system, and the method comprises the steps: constructing a global schedulable resource map of a testing station, so as to create a resource load balancing table and a global testing database of the testing station; configuring a synchronous test controller of the test station by using the test task flow generated by the test station and the global schedulable resource atlas; reading the unique identity label of the USB module so as to establish an association mapping network of the USB module in the global test database; and executing multi-station synchronous testing and data association processing of the USB module based on the global schedulable resource atlas, the resource load balancing table, the synchronous testing controller, the collaborative optimization strategy set and the association mapping network. According to the invention, accurate synchronous control of multi-station test and automatic correlation analysis of test data can be realized.

The invention relates to the technical field of data encryption, in particular to a USB multi-port equipment access encryption authentication method and system. Comprising a power supply module 100, a master control MCU unit 200, an analog signal switching unit 300, a USB expansion unit 400, a plugging detection unit 500 and a host interface unit 600, and the master control MCU unit 200 is connected with the analog signal switching unit 300, the USB expansion unit 400, the plugging detection unit 500 and the host interface unit 600 and used for achieving signal control and state management; the method does not depend on operating system permission or user behaviors, software installation is not needed, identification, authentication and control operations are completed completely through hardware, and non-bypassing performance is achieved. The problems that a traditional white list strategy is easy to bypass, needs to depend on authorization of an operating system and lacks physical isolation are effectively solved. The system supports upgrade authentication algorithms such as RSA, ECC and the like, supports a log recording function and a remote communication management module, can realize strategy adjustment through a firmware upgrade mechanism, and meets access management and control requirements of different scenes.

The invention relates to an adapter module (6, 6') for a modular industrial connector, the adapter module (6, 6') being designed to accommodate a commercially available USB-C connector (11).

The utility model relates to a rechargeable folding foot tub which aims at solving the technical problems that an existing similar foot tub product lacks charging and shower type spraying functions, is inconvenient to use after being powered off, lacks heat preservation structural design and is poor in heating safety. The foot tub is characterized in that a USB socket is arranged on one side of the bottom of a tub body of the foot tub, a battery protection plate and a waterproof battery box are arranged in the bottom of the tub body, and a rechargeable lithium battery is arranged in the waterproof battery box; a water pump is arranged in the bottom of the barrel body, a water inlet of the water pump is communicated with a water inlet hole in the bottom in the barrel body through a pipeline, a filter screen piece is arranged at the water inlet hole, a water outlet hole of the water pump is communicated with a water outlet hole in the bottom in the barrel body through a pipeline, and a shower spraying rod is inserted into the water outlet hole and located in the middle of the other side of the bottom in the barrel body. A shower nozzle of the shower spraying rod sprays water in an umbrella shape; a heat preservation heating wire which is fixed to the bottom of the barrel body in an attached mode and is bent in a snake shape is arranged below the bottom of the barrel body, and corresponding parts are connected with the control circuit board through circuits.

The invention relates to the technical field of intelligent equipment interaction, and discloses a multi-screen cooperative control method and system based on a USB. The method comprises the following steps: acquiring task characteristics of each equipment screen, and analyzing screen vision composition according to the task characteristics to determine a task type; if the task type is a high-real-time category and the transmission link performance is poor, allocating a high-priority mark to the task and adjusting transmission resources; monitoring the execution state of the task with the high priority mark to determine a supplementary instruction; fusing the supplementary instruction and context sensing data to generate a final collaborative instruction set; and allocating and executing the collaborative instruction set, and performing feedback optimization by comparing an execution result with a preset task state. According to the method, by dynamically sensing the task and adaptively adjusting the instruction, the problem that in the prior art, the efficiency is not high due to the fact that a collaborative strategy is rigid is solved.